walk in freezer smokey

[Deniver45]

hey guys had another enquiry by a chef he says his walk in freezer builds up with wat appears to be smoke further too this blows out a funny smell iv checked the coils no ice build up i cant see signs of anything burnt its on an auto defrost cycle twice a day could this have anything to do with it any ideas let me no im pickling my brain over this

If it is not a bad fan motor.........I hade one SMOKE last week; but you can smell that a MILE away!

a bad fan termination switch during defrost could cause the fans to run while the heaters are fired and would throw a MIST in the air.

Defrost cuts the fans and fires the heaters, then the other sensor senses that the coil is icing and then it turns the fans back on to ensure water wont be misted all over the box.

Check that out and maybe that could be it.